President Obama’s conspicuous mentions of his born-again climate-change priorities in his second inaugural on Monday seemed at least partially designed to reassure the environmental lobby that his neglect of their favorite climate and energy issues since the start of the presidential campaign season is officially over. How much the president can really do for their pet interests, however, is up in the air — much like the gun-control debate, the president can’t ‘accomplish’ major items like cap-and-trade or international emissions treaties without the approval of Congress.